Nortrax
190 David Manchester Road, Ottawa
21 May 2014
Project: 13-104-070
PART 1 1.1.
1.2.
1.3.
1.4.
1.5.
PRODUCTS ....................................................................................................................... 1
EQUIPMENT ......................................................................................................................................... 1
SEQUENCE OF OPERATION .............................................................. Error! Bookmark not defined.
PART 3 -
3.1.
3.2.
GENERAL .......................................................................................................................... 1
WORK INCLUDED ................................................................................................................................ 1
REFERENCE STANDARD ................................................................................................................... 1
ALTERNATES ....................................................................................................................................... 1
DESCRIPTION ...................................................................................................................................... 1
WARRANTY .......................................................................................................................................... 1
PART 2 -
2.1.
2.2.
23 83 16
RADIANT HEATING SYSTEMS
EXECUTION....................................................................................................................... 3
INSTALLATION ..................................................................................................................................... 3
TECHNICAL SUPPORT ........................................................................ Error! Bookmark not defined.
INDEX
Nortrax
190 David Manchester Road, Ottawa
21 May 2014
Project: 13-104-070
PART 1 1.1.
1.5.
Radiant tubing system shall consist of component parts, design technology and installation
inspection by Klimatrol.
ALTERNATES
.1
1.4.
Provide all labour, materials, products, equipment and services to supply and install the
radiant heating systems indicated on the Drawings and specified in this Section of the
Specification.
REFERENCE STANDARD
.1
1.3.
Systems by other firms whose products have been in successful operation for at least 10
years will be considered with proposed system specifications. Submit the following data with
the bid:
.1
Manufacturer’s regularly published data of snow melting systems, parts and
equipment.
.2
Building Owner’s names, addresses and phone numbers of at least 10 snow melting
system installations of similar application to this project, where proposed system and
products have been in successful operation for at least 10 years. Installation of
system shall be by the mechanical contractor.
DESCRIPTION
.1
System shall be hydronic type consisting of glycol heater, pump, expansion tank, controls
and piping. System shall be designed for a performance capacity as indicated in Scheduls
on drawings.
.2
Provide radiant tubing system as shown in the Drawings.
WARRANTY
.1
The manufacturer shall furnish, at the completion of installation as described herein, a
Certificate of Inspection signed by his authorized representative. The system shall be
covered by a five year System Performance Warranty.
PART 2 2.1.
GENERAL
WORK INCLUDED
.1
1.2.
23 83 16
RADIANT HEATING SYSTEMS
Page 1
PRODUCTS
EQUIPMENT
.1
Piping
.1
All radiant heating pipe shall be high-density crosslinked polyethylene manufactured
using the high-pressure peroxide method of crosslinking (PEXa). Pipe shall conform
to ASTM F876, ASTM F877 and CSA B137.5.
.2
Pipe shall be rated for continuous operation of 100 psi gauge pressure at 180°F
temperature (690 kPa @ 82°C), and 80 psi gauge pressure at 200°F temperature
(550 kPa @ 93°C).
Nortrax
190 David Manchester Road, Ottawa
21 May 2014
Project: 13-104-070
.3
When required, pipe shall have a co-extruded oxygen diffusion barrier capable of
limiting oxygen diffusion through the pipe to less than 0.32 mg/(m2/d) @ 104°F
(40°C) water temperature, in accordance with DIN 4726.
.4
Bend Radius
.5
.6
.2
.3
23 83 16
RADIANT HEATING SYSTEMS
Page 2
.1
The minimum bend radius for cold bending of the pipe shall be not less than
five (5) times the outside diameter.
.2
Bends with a radius less than this shall require the use of a bending template
as supplied by the pipe manufacturer, and/or hot air.
Compliant to the following standards:
.1
ANSI/UL 263 through certification listings with Underwriters Laboratories, Inc.
(UL).
.2
UL Design No. L588— 1 hour wood frame floor/ceiling assemblies
.3
UL Design No. K917 — 2 hour concrete floor/ceiling assemblies
.4
UL Design No. U383 — 1 hour wood stud/gypsum wallboard wall assemblies
.5
UL Design No. V461 — 1 hour steel stud/gypsum wallboard wall assemblies
Pipe to have a Flame Spread Index and a Smoke Developed Index listing to ASTM
E84 (in U.S.) or CAN/ULC S102.2 (in Canada).
Fittings
.1
Fittings shall be third-party certified to applicable standards ASTM F877, ASTM
F2080 and CSA B137.5 as part of the manufacturer’s PEX piping system, with
independent listings from NSF, CSA and ICC, as applicable.
.2
Compression nut manifold fittings shall be manufactured of brass with a barbed
insert and a reusable split compression ring.
.3
Compression-sleeve fittings shall be manufactured of brass and shall be approved by
the piping manufacturer to be part of a proven cataloged system.
.4
Fittings embedded within the thermal mass or encased behind walls or ceilings shall
be cold-expansion compression-sleeve fittings certified to ASTM F2080. Where
required by the manufacturer, fittings shall be protected from external environmental
conditions.
Manifolds
.1
Material: Distribution manifolds shall be manufactured of brass or copper and be
supplied by the piping manufacturer as a proven cataloged part of the manufacturer's
system.
.2
Brass manifolds shall be produced from extruded brass round pipe with tapped holes
for connections, and be pre-assembled by the manufacturer. 100% of manifolds used
shall have been air tested by the manufacturer with no indication of leaks.
Nortrax
190 David Manchester Road, Ottawa
21 May 2014
Project: 13-104-070
.3
.4
PART 3 3.1.
23 83 16
RADIANT HEATING SYSTEMS
Page 3
Balancing Manifolds
.1
Where required by design, brass balancing manifolds shall be equipped with
integral visual flow gauges, circuit balancing and flow control valves, isolation
valves with integral thermometer housings, and air vent/fill ports.
.2
Each circuit valve shall be supplied with a manual actuating handle for
filling/purging operation.
Copper Manifolds
.1
Copper manifolds shall be manufactured from Type L copper.
.2
Copper and/or brass outlets shall be high-temperature brazed (lead-free) into
headers.
.3
Outlets in copper headers shall be made using the T-drill process according
to ASTM F2014.
EXECUTION
INSTALLATION
.1
Install in accordance with manufacturer's published installation manual and/or published
guidelines and final drawings.
.2
Mount manifolds in the locations previously prepared or in previously installed cabinets, if
used. Manifolds shall be mounted as level as possible.
.3
Route piping in an orderly manner, according to layout and spacing shown in final drawings.
All installation notes shown on the drawings shall be followed.
.4
At connections and fittings, use a plastic pipe cutter to ensure square and clean cuts, and
join pipes immediately or cap ends of pipe to seal from contaminants. Where fittings are
installed within the thermal mass, they shall be wrapped in non-adhesive waterproof silicone
tape or sealed within a heat-shrink material approved by the manufacturer.
.5
Pipe shall be dispensed using a suitable uncoiling device. Remove twists prior to securing
pipe. Pipe shall lie flat on an even plane. Finished grade of a thermal mass shall be a
minimum of 3/4 in (19 mm) above the top of PEX heating pipes. Fasten piping at no more
than 3 ft (90 cm) intervals, being careful not to twist the pipe. In thin concrete slabs, secure
piping every 2 ft (60 cm). Use only fasteners supplied or approved by the manufacturer of
the PEX pipe.
.6
Piping that passes through expansion joints shall be covered in protective polyethylene
corrugated sleeving (flexible conduit) extending 15 in (38 cm) on each side of the joint.
Sleeving shall be secured on pipe to prevent movement during installation of thermal mass.
.7
Where piping exits the thermal mass, a protective conduit shall be placed around the pipe,
with the conduit extending a minimum of 6 in (15 cm) into the floor and exiting by a minimum
of 6 in (15 cm). For penetrations at manifolds, use rigid PVC bend guides secured in place
to prevent movement.
.8
At the time of installation of each circuit of pipe, connect the pipe to the correct manifold
outlet and record pipe length for balancing. If manifold is not installed, cap the end of the
Nortrax
190 David Manchester Road, Ottawa
21 May 2014
Project: 13-104-070
23 83 16
RADIANT HEATING SYSTEMS
Page 4
pipe and label the pipe's circuit numbers along with S for supply and R for return. Connect
pipes to manifold as soon as possible and record circuit lengths. All circuits shall be labeled
to indicate circuit length and serviced area.
.9
.10
The following precautions shall be taken in areas intended for carpet:
.1
Notify carpet installer that radiant heating pipes have been installed.
.2
Keep pipes 6 in (15 cm) from all wall baseplates.
.3
Install metal guards where pipe will pass through wall baseplates and where carpet
tack strips will be installed.
The following precautions shall be taken in areas intended for hardwood flooring:
.1
3.2.
Ensure that nailing areas for hardwood flooring, if nailing is required, are clearly
marked and known for hardwood installers.
.11
If the radiant heating system substrate material (thermal mass) requires curing and/or has
other limitations which can be influenced by the radiant heating system while in operation,
then the radiant heating system shall not be put into operation until such time that the
substrate material has fully cured or set according to the material requirements of the
substrate manufacturer.
.12
The installer shall confirm minimum and maximum exposure temperatures for the substrate
material (thermal mass) and shall ensure proper radiant heating operating temperatures.
FIELD QUALITY CONTROL
.1
Filling, Testing & Balancing: Tests of hydronic heating systems shall comply with authorities
having jurisdiction, and, where required, shall be witnessed by the building official.
.2
Pressure gauges used in testing and balancing shall show pressure increments of 1 psig and
shall be located at or near the lowest points in the distribution system.
.3
Air Test
.4
.5
.1
Charge the completed, yet unconcealed pipes with air at a minimum of 40 psig.
.2
Do not exceed 150 psig.
.3
Use liquid gas detector or soap solution to check for leakage at manifold
connections.
Water Test
.1
Purge air from pipes.
.2
Charge the completed, yet unconcealed pipes with water.
.3
Take necessary precautions to prevent water from freezing.
.4
Check the system for leakage, especially at all pipe joints.
Perform a preliminary pressure test pressurizing the system to the greater of 1.5 times the
maximum operating pressure or 100 psig for 30 minutes.
Nortrax
190 David Manchester Road, Ottawa
21 May 2014
Project: 13-104-070
.6
.7
3.3.
3.4.
23 83 16
RADIANT HEATING SYSTEMS
Page 5
.1
As the piping expands, restore pressure, first at 10 minutes into the test and again at
20 minutes.
.2
At the end of the 30-minute preliminary test, pressure shall not fall by more than 8
psig from the maximum, and there shall be no leakage.
After successfully performing the preliminary pressure test, perform the main pressure test
immediately.
.1
The test pressure shall be restored and continued as the main test for 2 hours.
.2
The main test pressure shall not fall more than 3 psig after 2 hours.
.3
No leakage shall be detected.
Pressure shall be maintained and monitored during installation of the thermal mass.
.1
If any leak is detected during installation of thermal mass, leak shall be found
immediately and the area cleared for repair using manufacturer’s approved repair
coupling.
.2
Retest before covering repair.
.8
Complete inspection and furnish test reports supplied by the manufacturer of the system.
.9
All low-voltage equipment shall be tested. The following 3 items should be checked as a
minimum:
.1
Inputs
.2
Outputs
.3
Sequence of Operations
Cleaning
.1
Clean exposed surfaces upon completion of installation using clean, damp cloth. No cleaning
agents are allowed.
.2
Comply with manufacturer’s recommendations.
Protection
.1
Protect installation throughout construction process until date of final completion.
.2
Replace components that cannot be repaired.
END OF SECTION